<template>
  <!-- 添加或修改菜单对话框 -->
  <el-dialog
    :title="!form.menuId ? '新增': '修改'"
    :visible.sync="visible"
    append-to-body
  >
    <el-form
      ref="dataForm"
      :model="form"
      :rules="rules"
      label-width="80px"
    >
      <el-row>
        <el-col :span="12">
          <el-form-item
            label="菜单类型"
            prop="menuType"
          >
            <el-radio-group
              v-model="form.menuType"
              size="small"
            >
              <el-radio-button label="0">页面</el-radio-button>
              <el-radio-button label="1">按钮</el-radio-button>
            </el-radio-group>
          </el-form-item>
        </el-col>
        <el-col :span="12">
          <el-form-item label="上级菜单">
            <treeselect
              v-model="form.parentId"
              :options="menuOptions"
              :normalizer="normalizer"
              :show-count="true"
              placeholder="选择上级菜单"
            />
          </el-form-item>
        </el-col>
      </el-row>
      <el-form-item
        label="名称"
        prop="name"
      >
        <el-input
          v-model="form.name"
          placeholder="请输入菜单名称"
        />
      </el-form-item>
      <el-form-item
        v-if="form.menuType !== '1'"
        label="路由地址"
        prop="path"
      >
        <el-input
          v-model="form.path"
          placeholder="请输入路由地址"
        />
      </el-form-item>
      <el-form-item
        label="权限标识"
        prop="permission"
      >
        <el-input
          v-model="form.permission"
          placeholder="请权限标识"
          maxlength="50"
        />
      </el-form-item>
      <el-row>
        <el-col :span="12">
          <el-form-item
            label="排序"
            prop="sortOrder"
          >
            <el-input-number
              v-model="form.sortOrder"
              controls-position="right"
              :min="0"
            />
          </el-form-item>
        </el-col>
        <el-col :span="12">
          <el-form-item
            v-if="form.menuType !== '1'"
            label="显示状态"
            prop="visible"
          >
            <el-radio-group v-model="form.visible">
              <el-radio-button label="1">显示</el-radio-button>
              <el-radio-button label="0">隐藏</el-radio-button>
            </el-radio-group>
          </el-form-item>
        </el-col>
      </el-row>
    </el-form>
    <div
      slot="footer"
      class="dialog-footer"
    >
      <el-button
        type="primary"
        @click="dataFormSubmit"
      >确 定</el-button>
      <el-button @click="visible = false">取 消</el-button>
    </div>
  </el-dialog>
</template>

<script>
import { addObj, fetchMenuTree, getObj, putObj } from '@/api/app/appmenu';
import Treeselect from '@riophae/vue-treeselect';
import '@riophae/vue-treeselect/dist/vue-treeselect.css';

export default {
  name: 'Menu',
  components: { Treeselect },
  data() {
    return {
      // 遮罩层
      loading: true,
      // 菜单树选项
      menuOptions: [],
      // 是否显示弹出层
      visible: false,
      form: {
        menuId: undefined,
        name: undefined,
        path: undefined,
        icon: undefined,
        permission: undefined,
        menuType: '0',
        keepAlive: '0',
        visible: '1',
        sortOrder: 999,
      },
      // 表单校验
      rules: {
        name: [
          { required: true, message: '菜单名称不能为空', trigger: 'blur' },
        ],
        sortOrder: [
          { required: true, message: '菜单顺序不能为空', trigger: 'blur' },
        ],
        path: [
          { required: true, message: '路由地址不能为空', trigger: 'blur' },
        ],
        permission: [
          { required: true, message: '权限标识不能为空', trigger: 'blur' },
        ],
      },
    };
  },
  methods: {
    init(isEdit, id) {
      if (id != null) {
        this.form.parentId = id;
      }
      this.visible = true;
      this.getTreeselect();
      this.$nextTick(() => {
        this.$refs['dataForm'].resetFields();
        if (isEdit) {
          getObj(id).then((response) => {
            this.form = response.data.data;
          });
        } else {
          this.form.menuId = undefined;
        }
      });
    },
    // 表单提交
    dataFormSubmit() {
      this.$refs['dataForm'].validate((valid) => {
        if (valid) {
          if (this.form.parentId === undefined) {
            this.form.parentId = -1;
          }

          if (this.form.menuId) {
            putObj(this.form).then((data) => {
              this.$message.success('修改成功');
              this.visible = false;
              this.$emit('refreshDataList');
            });
          } else {
            addObj(this.form).then((data) => {
              this.$message.success('添加成功');
              this.visible = false;
              this.$emit('refreshDataList');
            });
          }
        }
      });
    },
    /** 查询菜单下拉树结构 */
    getTreeselect() {
      fetchMenuTree().then((response) => {
        this.menuOptions = [];
        const menu = { id: -1, name: '根菜单', children: [] };
        menu.children = response.data.data;
        this.menuOptions.push(menu);
      });
    },
    /** 转换菜单数据结构 */
    normalizer(node) {
      if (node.children && !node.children.length) {
        delete node.children;
      }
      return {
        id: node.id,
        label: node.name,
        children: node.children,
      };
    },
  },
};
</script>
